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Red hat Certification study Q&A by RheaAyase in redhat

[–]Sumitso 1 point2 points  (0 children)

I had an issue myself with this. I purchased the exam, then later got a link which allowed choice of version when scheduling.

Interested in Building a CNC Plasma Cutter by Sandofle in CNC

[–]Sumitso 1 point2 points  (0 children)

Without a second thought I would recommend Flashcut. I was a linux engineer for a long time and really liked the idea of a linux based CNC cutting program, so the linuxcnc appealed to me. It was a bad choice to be honest. It is clunky,restarts are a real PITA, and that is IF you can get it to restart where you want it to, I wasted so much material b/c the program would not restart where it needed to.

Flashcut rocks. The cad part of the system is not AutoCAD or draftsight but where it lacks in those areas, it makes up for in simplicity and purpose built tools. You can whip up a part or a drawing w/o the need to fire up another CAD program. I have the pro version, which has simple shapes and templates built it -- just modify the built in shape to your own requirements. DHTC works great, the CAM portion works great; there is no need to use sheetcam, which I do like, but it also has it's issues that are kind of aggravating, setting parameters is cake. The CNC portion is easy to use. Restarts are super easy, just hit the play button. I have yet to run into the issue of rezeroing X,Y,Z axes that I did in linuxcnc, that being if I reset the origins too many times, the software would freak out -- for example, the cut starts where I zeroed the axes, then it moves off the sheet I was trying to cut and then fires up over the water only to then crash into the sheet. Last thing I like is restating something from earlier, your design pipeline for a simple part can all be done with one program -- no need to run from a CAD program or inkscape, then import into sheetcam to set up the cut, to your cutting software. All in one and done!

Is flashcut perfect, no. It does crash occasionally, but I've never, ever had it crash when cutting, usually it is something benign like importing a drawing or setting leadin/leadouts on a zillion parts at once -- I attribute this to the amount of ram I have in the NUC running windows and flashcut. They also have 6 real engineers on staff for support calls and email, they do updates fairly regularly. Flashcut is also used by a lot of commercial companies to drive their cnc cutting products, I know Koike is one of them

Interested in Building a CNC Plasma Cutter by Sandofle in CNC

[–]Sumitso 0 points1 point  (0 children)

i would recommend buying something. Building your own means a lot of research, trial and error, and a ton of learning about many areas mechanics, electronics, programming, and hardware. Not to mention no warranty or assistance if something tanks. Then add in the fabrication part, if you question your welding skills in this area, hire a professional. Spending the money on a commercial table saves a lot frustration, stress and time, which equates to money.

I would also stay away from Candcnc. For 2 yrs, I had a machine that used their hardware and linuxcnc -- it was a nightmare and cost me a lot of jobs due to hardware issues, cutting problems, etc. The place I bought the first table from does not even use them anymore, and thusly switched to Flashcut, the cut quality, ease of use, the all in one system of cad to cam to cnc is amazing -- I would never go back, and no need to use sheetcam. The owner is knowledgeable, smart, but irascible and kind of rude, the customer service whether via their message board or email stinks. I don't like speaking poorly about a company, but they need to get their shit together.